Global Journal of Environmental Science and Management2383-35725220190401Different methods of bacterial inoculation on the yield of chamomile blossoms and essential oil2372483444910.22034/gjesm.2019.02.09ENA. MostafaDepartment of Agricultural Microbiology, Agricultural and Biological Research Division, National Research Center, EgyptM. KhalafallahDepartment of Agricultural Microbiology, Agricultural and Biological Research Division, National Research Center, EgyptS. AboSederaDepartment of Agricultural Microbiology, Agricultural and Biological Research Division, National Research Center, EgyptH. FathyDepartment of Agricultural Microbiology, Faculty of Agriculture, Cairo University, EgyptA. HigazyDepartment of Agricultural Microbiology, Faculty of Agriculture, Cairo University, EgyptJournal Article20181104Chamomile is one of the most wide spread medicinal plant cultivated in Egypt. This work aimed at enhancement of blossoms and oil production of chamomile plants via biofertilization with PGPRs under organic farming system. In this study, 6 bacterial strains were applied using two different inoculation techniques. The first application method was throughout soaking the roots of seedlings in the bacterial suspension before transplanting. The second technique was by adding the bacterial inocula to soil 2 weeks after transplantation. The results showed that root dipping method displayed high impact on the yield of chamomile blossoms and essential oil percentage. Furthermore, the soil application of the bacterial inocula didn’t show any significant impact in this respect. Where <em>Paenibacillus polymyxa, Bacillus subtilis</em>, <em>Serratia plymuthica </em>and <em>Streptomyces subrutilus </em>increased the dry weight of chamomile blossoms compared to the control, essential oil content increased significantly in case of <em>Serratia plymuthica, Stenotrophomonas rhizophyla </em>and <em>Bacillus subtilis</em>. The current results also indicated that bacterial strains produced the highest indole-3-acetic acid and gibberellic acid resulted in the highest yield of both flowers and essential oil.
Biofertilization
Chamomile
Inoculation method
organic agriculture
Plant growth promoters
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